PTO SR.

I recently replaced the original Bridgestones on my 2004 TL with the Michelin Sport Ps 2 tires from Costco. The car has only 20,000 miles but the Bridgestones were terrible in the rain and wearing quickly so I dumped them in favor of the Michelin's.

After roughly a month the car has a exibited a problem when you hit a bump at higher freeway speeds where the steering wobbles as though a stabilizer may have stopped working. I am wondering if this is a coincidence and I should take the car in for warranty service or if it could possibly be the tires?

Any suggestions?

KrayzieDxC

may be need to re-balance the tires.